Abstract

This is a collection of essays written by Hintikka over a period of eight or nine years on logics of existence and on the semantics of modal logics, areas in which he has made pioneer studies. The introductory essay defends formal methods in philosophical analysis. Two essays follow on logics of existence, one of them relating such logics to discussions of the ontological argument. Of the four essays on the semantics of modal logics, the first two "Modality and Quantification" and "The Modes of Modality" discuss the possibilities for philosophical work with the semantics of modal logics generally and the second two "Semantics for Propositional Attitudes" and "Existential Presuppositions and Uniqueness Presuppositions" discuss philosophical applications and try to deal with some of Quine's objections to modal logics. Two final essays apply Hintikka's methods to problems in the philosophy of perception and metaethics. In a paper "On the Logic of Perception" he discusses the nature of immediate perception and sense-data theories and in a paper "Deontic Logic and its Philosophical Morals" he discusses the distinction between prima facie and absolute obligation and John Searle's attempted derivation of "ought" from "is." All essays but this last one have been previously published, but not all in places readily available to English-speaking readers.--R. H. K.